I know it is a long drive, but the Pick-N-Pull in Dallas on Loop 12 has a 116, or at least they did three weeks ago. It is a 300SD. Look to your left as you enter the yard and it is behind the fence that is between the parts cars and the ones for sale.

I don't know if they would have the same part number, but a radiator from a 300SD would likely fit although the inlet and outlet might not be on the same side as yours. You would just have to work around that.

The Diesel radiator would likely be thicker as well since Diesel create a lot more heat.

Hopefully this helps.